Bump com.azure:azure-identity from 1.6.0 to 1.12.2 in /samples/java

Bumps [com.azure:azure-identity](https://github.com/Azure/azure-sdk-for-java) from 1.6.0 to 1.12.2.
- [Release notes](https://github.com/Azure/azure-sdk-for-java/releases)
- [Commits](Azure/azure-sdk-for-java@azure-core_1.6.0...azure-identity_1.12.2)

---
updated-dependencies:
- dependency-name: com.azure:azure-identity
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

samples/java/pom.xml

@@ -32,7 +32,7 @@
     <dependency>
       <groupId>com.azure</groupId>
       <artifactId>azure-identity</artifactId>
-      <version>1.6.0</version> <!-- {x-version-update;com.azure:azure-identity;dependency} -->
+      <version>1.12.2</version> <!-- {x-version-update;com.azure:azure-identity;dependency} -->
     </dependency>
     <dependency>
         <groupId>com.azure</groupId>